When using a power conditioner, why is it advised to run amps directly to the wall?

If you live in a 3rd World country or have cheaply built gear, a power conditioner might help. 

Otherwise, straight to the wall so you don't limit current...this is according to Nelson Pass, who also recommends using the power cord that comes with his amps. 

Power Conditioners do not solve any of these common problems:

See PDF here read pages 11 12 13 38

Mike

Otherwise, straight to the wall so you don't limit current...this is according to Nelson Pass, who also recommends using the power cord that comes with his amps.

Nelson who? What? Who dat? What kinda name is Nelson anyways? You gonna trust a dude called Nelson? No my man lemme tell you where it's at. I know a lot of dudes on the internet, and they do lotsa research from their barca-loungers, know what I mean? And they say you don't want no cheap cables, you want $5000 cables made of solid stainless steel. And if you can't swing $5000 cables well that sucks for ya but don't try and tell us your pathetic desinformation cause we know the truth! Look at that Nelson guy who can't even buy himself a cable. What does he know? Huh? I know who I believe, man. I do my research too.

By extension, is the common wisdom NOT to plug a powered subwoofer into a power conditioner? I’ll try it both ways.

If your system is transparent and resolving, you will hear the power conditioner.